Apparatus for coating.



P. E. GOLDSMITH.

APPARATUS FOR COATING.

APPLICATION FILED 817F125, 1905.

Patented Oct. 25, 1910.

Inventor flan/4m; 6 6/624 Attorney Witnesses new and usefull UNITED STATES PATENT OFFICE.

FREDEBIGKE. GOLDSMITHQ' OF MIDDL'ETOWN, OHIO, ASSIGNOR TO THE =MACHINERY COMPANY, OF HAMILTON,

l nrrnwrus FOR COATING.

To all whom it may concern:

'Be it. known that'I, FREDERICK E. Gonn- SMITH, a citizen of the United States, and a resident of Middletown, in the county of Butler and State of Ohio, have invented a rovement'in Apparatus for. Coating, of ,hichthe following is a specification.

The invention relates to coating machines and processes for coating.

The object of. the invention. is .to apply to articles a uniform layer, or layers, of coating with great facility, speed and cheapness.

The invention is.peculiarly :adaptedfor coating ceramics in the biscuit.

.Figure 1 is a diagrammatic section of instrumentalities through which the inven- -tion -may be carried out. Fig. 2 is a schematic perspective of one form of the in-. vention. Fi 3 is a longitudinal detail section; hereina ter. referred to.

In the .drawings, 1 typifies any carrying conduit.

2 are. lips formed on the upper side of the conduit, at.,a point-where it is desired to apply the coat ng, through which it is caused to flow. upwardly.

'3 is the mouth formed by the lips2 and end walls 4.

5 is a ledge formed at one side of the mouth 3 and-serving to induce the coating flowing upwardly through the mouth to ru over the ledge-and. fall downwardly. i

6 is'areceptacle for catching the coating flowing through the mouth 3.

isan incoming, and 8 an outgoing convyer belt. 9 are rolls supporting the belts in the nei hborhood of the coating mouth 3.

10 is a bead breaker mounted adjacent to the led e 5. 11 are means for adjustably supportln the bead breaker with respect to height an distance from the'coating mouth or ledge.

12' typifies a feeding-orifice for the coating composltion into the conduit 1, and 13, a feed pipe therefor.

Means are provided for fluming away a portion of the coating supplied to secure more eificient results. In such cases 14 may represent a flume pipe terminating in a rotary cap 15, which cap is caused to register with a dischar e opening 16 in conduit 1. By. oscillating 51c cap 15 the amount of discharge may be regulated, or cut off.

Specification of Letters Patent.

Application filed September 25, 1905. Serial No.

CERAMIC omo.

The mouth 3 is preferably bell-shaped in,

gauze has been employed, doubled upon itself at the upper end. The bead breaker may, however, be impervious and of any form suitable for the purpose; In its pervious form it absorbs well the excess coating material which'may be upon articles coated.

Coating material is caused to flow upwardly throughthe mouth 3 from either a force feed such as a fountain at a higher level, or a pump, or the like. By admitting the coating into the conduit 1 longitudinally thereof at 12 and intermediate of its length, the volume of the supply at the mouth is kept substantially constant. A further provision for aiding thev uniformly constant supply is the regulating flume pipe 14. These provisions prevent unequal local reacting pressures beingformed in portions of the conduit and approaches to the mouth which would cause an irregular flow of coating at the coating zone.

The article to be coated, as 17, is fed across the coating mouth in the direction of the arrows. The line of the feed supports is above the coating mouth. The'coating issuing from the mouth comes into effective contact with the lower face of the article 17 as it is fed across the mouth, and is thereby evenly coated. As the article leaves the coating zone the end of the same is likely to carry along with it a head of excess coating. This bead, when formed, is broken and removed by the bead breaker 10 coming in contact with the bead and removing the same. The article is therefore uniformly coated throughout for subsequent glazing, if the article be ceramic biscuit. The bead breaker is adjustably set, among other things, for different coatings. It may in some instances be dispensed with. The relation between the heights of the coating mouth and the line of feed may be adjustably regulated. Various speeds may be given thefeed inaccordance with working conditions. By theline of feed is meant a lane coincident with the face of the object ein coated.

hat I claim is: 1. The combination of a movable feed support, a discharge conduit opening laterally upon said support, means for preventin contact of the ob ect with the conduit an means for preventing the 'flow of coating through the discharge conduit beyond a point substantially coincident with the line of the moving support.

2. In a coating machine, the combination of an upwardly projecting orifice, means for preventin the flow of coating therethrou h substantia ly beyond the plane of the 0 ject-support, means for preventing contact of the object with the conduit and an objectsupport upon opposite sides of the orifice located above the mouth of the same.

3. In a coating machine, the combination of an upwardly projecting orifice, means for preventm the flow of coating therethrough, substantia 1y beyond the plane of the object support, means for preventing contact of the object with the conduit and a traveling object-support upon opposite sides of the orifice located above the mouth of the same, and serving to carry objects across the coating orifice so that they are coated on their lower side only.

4. The combination of a feed support, a

conduit discharging into the line of feed,

and stationary means for removing superfluous coating deposited onobjects carried by said feed support.

5. The combination of a feed sup ort, a conduit discharging into the line 0? feed, and adjustable means for removing excess coating deposited on objects carried by said feed support.

6. A coating device comprising a free coating orifice, means for passing objects to be coated across and substantially in the plane of said orifice, means for supplying said orifice with coacting medium, means for preventing contact of the object with the conduit, and means for preventing its flow beyond said plane.

7. A coating device comprising a coating orifice having a rolled ledge, means for passing objects to be coated across said orifice, and means for supplying said orifice with coating medium.

8. A coating device comprising a coating orifice, means for preventing contact of the object with said orifice, means for passing objects to be coated across said orifice, means for supplying said orificewith coating medium, and a fixed device for removing superfluous coating from the objects.

9. A coating device comprising a coating orifice having a rolled ledge, means for passing objects to be coated across said orifice,

means for supplying said orifice with coating medium, and a device .for removing superfluous coating from the objects.

10. The combination of a coating recelver, an upwardly extending orifice, means for preventing contact of theobject with said orifice, a coatin sup ly and a bead breaker osterior to sai on ce with respect to the ection of movement of objects to be coated.

11. The combination of a coating receiver, anupwardly extending orifice, a rolled ledge thereon, a coating supply, a bead breaker osterior to said orifice with respect to the 'rection of movement of ob ects to be coated.

12. The combination of a coating receiver, an upwardly extending orifice, means for preventing contact of the object with said orifice, a conve er for carrying objects over said orifice, and a bead breaker osterior to said orifice with respect to the irection of movement of objects to be coated.

13. The combination of a coating receiver, an upwardly extending orifice, a rolled ledge thereon, a conveyer for car ing objects over said orifice, and a bead reaker posterior to said orifice with respect to the direction of movement of objects to be coated.

14. The combination of a double belt conveyer having a space between the belts, and a free coating orifice dischargin approximately in the plane of feed of said 15. The combination of a conveyer for delivering objects to be coated, another conveyer for removing same somewhat removed from the first, and a free coating aperture discharging approximately in the plane of said conveyers and means for preventing contact of the object with the coating aperture.

16. The combination of a conveyer for delivering objects to be coated, another conveyer for removin same somewhat removed from the first, a ee coating aperture discharging approximatel in the plane of said conve ers, and a rolle ledge on said aperture or inducing discharge of coating material in one direction.

17. The combination of a conveyer for delivering objects to be coated, another conveyer for removin r same somewhat removed from the first, a iree coating a erture discharging approximately in the p ane of said conveyers means for preventing the contact of the ob ect with the coating aperture and a device for removing sur lus coating.

18. The combination 0 a conveyer for delivering objects to be coated, another conveyer for removin same somewhat removed from the first, a ree coating aperture discharging approximately in the plane of said conveyers, 2. rolled ledge on said aperture for induclng discharge of coating material in one direction, and a device for removing surplus coating.

orifice, a rolled ledge rolled ledge on 19. The combination of an elongated chamber, an extension of said chamber having a coating orifice, a conveyer for carrying objects to be coated over said orifice, and a bead breaker posterior to said orifice.

20. The combination of an elongated 'said chamber having a coating orifice, a

conveyer for carrying objects to be coated over said orifice, and a bead breaker posterior to said orifice.

23. The combination chamber, a sup said chamber of an elongated ly conduit, an extension of aving a coating orifice, a said orifice, and a conveyer for carrying objects to be coated over said orifice.

24. The combination of an elongated chamber, a supply conduit, an extension of said chamber having a coating orifice, a rolled ledge on said orifice, a conveyer for carrying objects to be coated over said orifice, and a bead breaker posterior to said orifice.

25. The combination of an elongated chamber, a supply conduit terminating substantially centrally in said chamber, an extension of said chamber having a coating orifice, means for object with said orifice, and a conveyer for 26. The combination of an elongated chamber, a supply conduit terminating substantially centrally in said chamber, an extension of said chamber having a coating on said orifice, and a conveyer for carrying objects to be coated over said orifice.

27. The combination of an elongated chamber, a supply conduit terminating substantially centrally in said chamber, an extension. of said chamber having a coating orifice, means for preventing contact of the object with said orifice, aconveyer for carrying objects to be coated and a bead breaker posterior to said orifice.

28. The combination of i an elongated preventing contact of the' Earrying objects to be coated over said oriover said orifice,

chamber, a supply conduit terminating substantially centrally in said chamber, an extension of said chamber having a coating orifice, a rolled ledge on said. orifice, a conveyer for carrying objects to be coated over said orifice, and a bead breaker posterior to said orifice.

29. In a machine for coating, a chamber, a coating orifice therein, means for preventing contact of the object with the coating orifices and means for circulating coating material through the chamber and supplying it to the orifice comprising a supply conduit communicating with the chamber, and a discharge vent leading from the chamber.

30. In a machine for coating, a chamber, a coating orifice therein, means for preventing contact of the object with the coating orifices and means for circulating coating material through the chamber and supplying it to the orifice comprising a supply conduit communicating with the chamber and a discharge vent leading from the chamber adjustable so as to regulate the amount of coating material passing through the chamber without issuing from the coating 31. In a machine for coating, a chamber having a coating orifice, means for reventing contact of the object with the coating orifice'and means for circulating coating material through the chamber and orifice comprising a supply conduit communicating with the chamber, a discharge opening leading from the chamber and carrying off a part of the material without its passing through the orifice, and a trough beneath the chamber for catching coating material flowing out of the orifice.

32. A coating device comprising a coating orifice, means for passing objects to be coated across the orifice substantially in the same plane, and means adjacent. to the orifice for removing superfluous coating "from the objects.

33. In a tile coating machine, an up wardly projecting spout, means for continuously flowing the liquid coating material through the spout, and endless carriers for passing the tile over the mouth of the spout with their coat receiving faces in close proximity thereto.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERIGK'E. GOLDSMITH. Witnesses! JAMES W. SEE,

JAMES FITTON. 

